EP1042631A1 - Piping joint and integrated valve with it - Google Patents

Piping joint and integrated valve with it

Info

Publication number
EP1042631A1
EP1042631A1 EP97950450A EP97950450A EP1042631A1 EP 1042631 A1 EP1042631 A1 EP 1042631A1 EP 97950450 A EP97950450 A EP 97950450A EP 97950450 A EP97950450 A EP 97950450A EP 1042631 A1 EP1042631 A1 EP 1042631A1
Authority
EP
European Patent Office
Prior art keywords
packing ring
joint
bush
hole
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97950450A
Other languages
German (de)
French (fr)
Inventor
Suk-Geum Yoon
Jae-Young Shim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1042631A1 publication Critical patent/EP1042631A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/083—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping
    • F16L19/086—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping with additional sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/061—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends a pressure ring being arranged between the clamping ring and the threaded member or the connecting member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/075—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends specially adapted for spigot-and-socket joints for pipes of the same diameter

Definitions

  • the present invention is a piping joint and an integrated valve with it.
  • the invention improves watertightness of connecting parts, maintains the joint firm and keeps its quality regardless repeated uses, thus it is convenient for maintenance.
  • a valve consists of a ball 11 operated by a lever 17 to pass through or to block an entrance and an exit of the valve, tapered screw part 13a equipped along circumferential side inside of pipe-connecting part 13 in said valve, screw part 20a formed on circumferential side to correspond to said screw part 13a, an open hole 20b through its axis, a bush 20 with a slant 20d on its longitudinal section, the first packing ring 16 with a slant 16b on the side; the second packing ring 18 which carries split on edge in part and involves slants 18b, 18c on both sides to contact a slant 20d of a bush 20 and a slant of the first packing ring 16.
  • the screw part 13a is formed inside said pipe-connecting part 13 through whole length and the first packing ring 16 and the second packing ring are inserted into screw part 13a. Therefore, it is inconvenient for maintenance because it is difficult to take them apart when repair needed.
  • the first packing rings are placed in the second holes of the connecting parts, and insertion of bushes increases thickness of the pushed second packing rings. Consequently, airtight and watertight between pipes and a joint body can be maintained. Connection can be maintained firm by that the second packing rings hold pipes tight.
  • the invention can be applied to piping for fluid with high pressure. Elevated stoppers formed at the second packing rings are caught by stoppers formed at connecting parts, thus this prevents the first packing rings from excessive transformation and its operator would not waste excessive energy in piping by detecting the connection condition easily from the outside. Repeated uses are possible to each components, thus this effects that saves budget in maintenance.
  • the purpose of the invention designed to solve problems of said prior art is to provide a piping joint and a valve controlling fluid flow, in which simple joint tools can conjoin pipes without screws or extra flange coupling processes, in piping for heating, water service, hygiene, and industry.
  • the present invention provides a joint body comprising connecting part(s) on one side, both sides, or three places where the end of raw pipe is inserted, a bush screwed inside the connecting part in the joint body, the first packing ring inserted at the edge of said pipe, and the second packing ring inserted at the edge of the first packing ring.
  • the connecting part of the joint body comprises the first hole where a pipe is inserted, the second hole where the first packing ring connected with the edge of the pipe is inserted, and the third hole being equipped with a female thread connecting the second packing ring and the bush.
  • the three holes form three phases outward on the concentric circle.
  • Said first packing ring which is made of silicon or Teflon that is flexible and sustainable against heat, is formed as short cylindrical figure with a right angle cutting end on both sides.
  • the one side of said second packing ring is connected to the first packing ring.
  • a stopper between the second hold and the third hole is placed to prevent the second packing ring from inserting too deeply into inside of the connecting part.
  • the other side of the second packing ring is tapered down in a certain angle to contact a slant of bush's edge and the tapered part is equipped with projections inside to hold pipes firm.
  • a female thread equipped in said bush conjoins a male thread in the third hole at the joint body's connecting part.
  • the female thread is equipped with several slits which help a female thread stick a male thread when screwed.
  • Figure 1 is an disjoined perspective view of a union joint describing the first embodiment
  • Figure 2 is an disjoined cross section of a union joint describing the first embodiment
  • Figure 3 is an assembly cross section of a union joint describing the first embodiment
  • Figure 4 is an enlarged cross section of the second packing ring used in a piping joint
  • Figure 5 is an assembly cross section of a male thread typed joint describing the second embodiment
  • Figure 6 is an assembly cross section of a female thread typed joint describing the third embodiment
  • Figure 7 is a cross section of an elbow joint describing the fourth embodiment
  • Figure 8 is a cross section of a cap joint describing the fifth embodiment
  • Figure 9 is a cross section of a T joint describing the sixth embodiment.
  • Figure 10 is a cross section of a joint with reduced diameter describing the seventh embodiment
  • Figure 11 is a cross section of a T joint describing the transformed sixth embodiment
  • Figure 12 is a cross section of a T joint describing another transformed sixth embodiment
  • Figure 13 is a cross section of a valve integrated with a male thread type joint describing the second embodiment
  • Figure 14 is a cross section of a valve integrated with a female thread type joint describing the third embodiment
  • Figure 15 is a cross section of a valve which is similar to an union joint in its constitution describing the first embodiment
  • Figure 16 is a cross section of an former valve equipped with pipes-connecting hole
  • Figure 17a is an enlarged cross section showing that the first packing ring and the second packing ring of a former valve with pipes-connecting hole are inserted and assembled in a valve;
  • Figure 17b is an enlarged cross section showing that the second packing ring transformed from Figure 17a maintain airtightness
  • Figure 18 is a perspective view of former first packing ring and second packing ring.
  • the first embodiment is shown in Figure 1 through 3.
  • the first embodiment is an union joint to connect two pipes in series in which connecting parts 110, 120 are formed on both sides of the joint body symmetrically and pipes PI, P2, bushes 130, 140, the second packing rings 150, 160, and the first packing rings 170, 180 are joined in order to the connecting parts 110, 120.
  • Hexagonal head part 102 is formed on circumference in the middle of the outer surface of the joint body 100 and as same sized hexagonal head parts 132, 142 as said hexagonal head part is formed on bushes 130, 140 working as one pair of spanners in combining and separating.
  • inner constitution of the joint body 100 can be detected and connecting parts 110, 120 on both sides are penetrated so that a fluid can move to either directions.
  • Said two connecting parts 110, 120 have identical constitution.
  • the first holes 112, 122 located in the center, the second holes 114, 124 which are a little bit larger than the first holes 112, 122, and the third holes 116, 126 are formed three phases from inside to outward in order.
  • the ends of pipes PI, P2 are inserted into the first holes 112, 122 which are formed as same size as the pipe's circumference and on the circumference around the middle of the pipe, a center stopper 104 which controls depth of inserting pipes PI, P2 can be formed.
  • Said second holes 114, 124 where the first packing rings 170, 180 are inserted are formed a little bit smaller than the first packing rings 170, 180.
  • Said third holes 116, 126 are where the second packing rings 150, 160 and bushes 130, 140.
  • Female threads 117, 127 are placed inside the third holes 116, 126 to be conjoined with male threads 134, 144 of bushes 130, 140.
  • the first stopper 113, 123 are formed between the first holes 112, 122 and the second holes 114, 124 so that the ends of the first packing ring 170, 180 are stopped and stuck.
  • the second stopper 115, 125 are formed between the second holes 114, 124 and the third holes 116, 126 so that the ends of the second packing rings 150, 160 are stopped and stuck.
  • the bushes 130, 140 comprise hexagonal head parts 132, 142 and male threads 134, 144 formed on one side of the hexagonal head parts.
  • Penetrating holes 136, 146 where pipes PI, P2 are inserted are formed inside of the hexagonal head parts 132, 142 and male threads 134, 144.
  • Said male threads 134, 144 are equipped with plural slits 135, 145 so that diameter of male threads is flexible.
  • Tapered and inclined parts 137, 147 are formed at the ends of the male threads 134, 144 to adhere to one side of said second packing rings 150, 160.
  • Figure 4 is a enlarged cross section of the second packing rings 150, 160 of the invention.
  • the second packing rings 150, 160 have connecting parts 152, 162 on one side, which contact said first packing rings 170, 180.
  • Tapred parts are formed to contact inclined parts 137, 147 of inside of the edges of the male threads 134, 144 of bushes 130, 140.
  • the second packing rings 150, 160 projections 158, 168 are formed on circumference of inner surface of tapered parts 156, 166 to hold pipes, PI, P2.
  • the contact parts 159, 169 with a certain radius of curvature are formed inside so that improves contact condition of outer surface of the pipes PI, P2 when conjoined with the second packing rings.
  • slightly inclined slits 151, 161 in one side in direction of length are formed on the second packing rings 150, 160, which enable the diameter to shrink.
  • first packing rings 170, 180 can be manufactured with silicone, Teflon or rubber materials, and for piping transporting high temperature fluid thermostable material can be used.
  • bushes 130, 140 and the second packing rings 150, 160 are put in pipes PI, P2 in order, and the first packing rings 170, 180 are inserted into the edges of the pipes PI, P2.
  • male threads 134, 144 of bushes 130, 140 are screwed at connecting parts 110, 120 and inserted inward.
  • the first packing rings 170, 180 at the first packing rings 112, 122 are under pressure with continuous rotating bushes 130, 140.
  • the packing rings 170, 180 are shrunk in direction of length but their thickness is increased. This effects that a gap between outside of the pipes PI, P2 and the first holes 112, 122 is filled up then, airtight and watertight are kept.
  • Figure 5 describes the second embodiment of the invention and the Figure 6 describes the third embodiment of the invention.
  • a male thread part 206 and a female thread part 208 which are conjoined in one on the side of a joint body 200, can be combined with material other than pipes, for example, faucet of the fluid tank by connecting the joint body 200 directly and a pipe P can be conjoined with the other side of the joint body's connecting part
  • the fourth embodiment described in Figure 7 is a elbow joint.
  • Connecting parts 310, 320 as same as shown in the first embodiment are formed on both sides of joint body 300 which is bent at an angle of 45° or 90° and pipes PI, P2, bushes 130, 140, the first packing rings 170, 180, and the second packing rings 150, 160 are inserted in order.
  • connecting parts 310, 320 are formed on both sides of elbow.
  • the invention is not restricted to this and a female thread can be formed on the side of the elbow and other materials other than pipes can be conjoined as shown in third embodiment.
  • the fifth embodiment described in Figure 8 is a cap joint to block the one end of a pipe P.
  • Connecting part 410 as shown in the first embodiment is formed on one side of closed-end joint body 400, and an end of a pipe P is conjoined to it, so that blocks the flowing of fluid completely.
  • the sixth embodiment described in Figure 9 is a T joint which have three connecting parts 510, 520, 530 to conjoin three same sized pipes
  • the seventh embodiment described in Figure 10 is a transformation of said first embodiment.
  • This joint have two different sized connecting parts 610, 620 on both sides of the joint body to connect two different sized pipes PI, P2 in series.
  • Connecting parts 710, 720 are formed on both sides of the joint body 700, and contact part 730 with a female thread 732 is formed in the middle, and materials other than pipes are screwed directly into the contact part 730 as shown in the third embodiment.
  • Figure 12 is T joint.
  • Identical sized connecting parts 810, 820 are formed on both sides of the joint and the connecting parts 810, 820 make a right angle with a middle connecting part 830 which is formed in different size, so a pipe with a narrower diameter can branch off.
  • Figure 13 and 14 describes a valve, as same as shown in second embodiment and the third embodiment, which is formed with a male thread joint or a female thread joint in one body, and on one end of the valve body 900 a male thread joint 902 or a female thread joint 904 is formed and on the other end the connecting parts 910, 920 are formed to conjoin with a pipe P.
  • Figure 15 describes a valve which has a similar constitution with a union joint described in the first embodiment.
  • the connecting parts 910, 920 of which constitution is as identical as shown in the first embodiment are formed on both sides of the valve body 900, and the valve can be placed between two pipes PI, P2.
  • the present invention provides a piping joint and a valve controlling fluid flow, in which simple joint tools can conjoin pipes without screws or extra flange coupling processes, in piping for heating, water service, hygiene, and industry.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Pressure Members (AREA)
  • Valve Housings (AREA)

Abstract

The present invention provides a piping joint and integrated valve with the piping joint, which improve airtight and watertight, maintain connection firm, and keep constant quality regardless repeated uses. In connecting part (110, 120) of the joint body (100), the first holes (112, 133), the second packing holes (114, 124) where the first packing rings (170, 180) are inserted, the third holes (116, 126) with a female threaded part inside conjoining the second packing rings (150, 160) and bushes (130, 140), having three holes formed three phases outward on the concentric circle. The first packing rings (170, 180) are made of silicon or Teflon® that is flexible and sustainable against heat. One side of said second packing rings (150, 160) contact the first packing rings (170, 180), and around the contact parts (152, 162) stoppers (154, 164) are placed to prevent the second packing rings (150, 160) from inserting too deeply into inside of the connecting parts (110, 120) of the joint body (100) and the other sides are tapered down in a certain angle to contact the slant (137, 147) of edges of bushes (130, 140), and the tapered parts (156, 166) are equipped with projections (158, 168) inside to hold pipes (P1, P2) firm.

Description

PIPING JOINT AND INTEGRATED VALVE WITH IT
Technical Field and Background Art
The present invention is a piping joint and an integrated valve with it. The invention improves watertightness of connecting parts, maintains the joint firm and keeps its quality regardless repeated uses, thus it is convenient for maintenance.
Prior art related to the present invention is "Valve with a pipe-connecting part" published in Korean Utility Model Specification No. 97-1671. Said prior art was invented by the current inventor and its technical gist is that, as shown in Figure 16 and 18, a valve consists of a ball 11 operated by a lever 17 to pass through or to block an entrance and an exit of the valve, tapered screw part 13a equipped along circumferential side inside of pipe-connecting part 13 in said valve, screw part 20a formed on circumferential side to correspond to said screw part 13a, an open hole 20b through its axis, a bush 20 with a slant 20d on its longitudinal section, the first packing ring 16 with a slant 16b on the side; the second packing ring 18 which carries split on edge in part and involves slants 18b, 18c on both sides to contact a slant 20d of a bush 20 and a slant of the first packing ring 16. Thus, in the prior art as said bush spins toward inside of the valve, a slant formed at the edge of the bush 20 pushes a slant 18c of the second packing ring 18 as shown in Figure 17 so that an open hole 18a of the second packing ring 18 is narrowed and finishes sealing.
But several disadvantages found in said prior art are as follows. First, to form tapered screw part 13a around the inside of the pipe-connecting part 13 results in difficulties in fine manufacturing and low precision of products. Thus, increased errors in manufacturing result in high inferiority rate in products and piping using this product may result in inferior construction.
Second, the screw part 13a is formed inside said pipe-connecting part 13 through whole length and the first packing ring 16 and the second packing ring are inserted into screw part 13a. Therefore, it is inconvenient for maintenance because it is difficult to take them apart when repair needed.
Third, in adjusting the proper tightening power to the bush 20, it is hard to detect required certain level of tightening power from outside. This results in disadvantages that, when tightening power is too strong, damage(s) can occur on the first packing ring 16, the second packing ring 18, screw part 13a in pipe-connecting part 13, and screw part 20a in the bush 20 and, when tightening power is weak, sealing condition gets bad.
With the invention, the first packing rings are placed in the second holes of the connecting parts, and insertion of bushes increases thickness of the pushed second packing rings. Consequently, airtight and watertight between pipes and a joint body can be maintained. Connection can be maintained firm by that the second packing rings hold pipes tight. Thus, the invention can be applied to piping for fluid with high pressure. Elevated stoppers formed at the second packing rings are caught by stoppers formed at connecting parts, thus this prevents the first packing rings from excessive transformation and its operator would not waste excessive energy in piping by detecting the connection condition easily from the outside. Repeated uses are possible to each components, thus this effects that saves budget in maintenance.
Disclosure of Invention
The purpose of the invention designed to solve problems of said prior art is to provide a piping joint and a valve controlling fluid flow, in which simple joint tools can conjoin pipes without screws or extra flange coupling processes, in piping for heating, water service, hygiene, and industry. With the invention, first, pipe's watertightness is improved, second, connection can be maintained firm, third, tightening level can be detected from the outside so that a proper level can be obtained, and fourth, possible repeated use ease its maintenance.
To achieve the purposes, the present invention provides a joint body comprising connecting part(s) on one side, both sides, or three places where the end of raw pipe is inserted, a bush screwed inside the connecting part in the joint body, the first packing ring inserted at the edge of said pipe, and the second packing ring inserted at the edge of the first packing ring. The connecting part of the joint body comprises the first hole where a pipe is inserted, the second hole where the first packing ring connected with the edge of the pipe is inserted, and the third hole being equipped with a female thread connecting the second packing ring and the bush. The three holes form three phases outward on the concentric circle. Said first packing ring, which is made of silicon or Teflon that is flexible and sustainable against heat, is formed as short cylindrical figure with a right angle cutting end on both sides. The one side of said second packing ring is connected to the first packing ring. And around the contact part a stopper between the second hold and the third hole is placed to prevent the second packing ring from inserting too deeply into inside of the connecting part. The other side of the second packing ring is tapered down in a certain angle to contact a slant of bush's edge and the tapered part is equipped with projections inside to hold pipes firm.
Furthermore, a female thread equipped in said bush conjoins a male thread in the third hole at the joint body's connecting part. The female thread is equipped with several slits which help a female thread stick a male thread when screwed.
Brief Description of the Drawings
Figure 1 is an disjoined perspective view of a union joint describing the first embodiment;
Figure 2 is an disjoined cross section of a union joint describing the first embodiment;
Figure 3 is an assembly cross section of a union joint describing the first embodiment;
Figure 4 is an enlarged cross section of the second packing ring used in a piping joint;
Figure 5 is an assembly cross section of a male thread typed joint describing the second embodiment;
Figure 6 is an assembly cross section of a female thread typed joint describing the third embodiment;
Figure 7 is a cross section of an elbow joint describing the fourth embodiment;
Figure 8 is a cross section of a cap joint describing the fifth embodiment;
Figure 9 is a cross section of a T joint describing the sixth embodiment;
Figure 10 is a cross section of a joint with reduced diameter describing the seventh embodiment;
Figure 11 is a cross section of a T joint describing the transformed sixth embodiment;
Figure 12 is a cross section of a T joint describing another transformed sixth embodiment;
Figure 13 is a cross section of a valve integrated with a male thread type joint describing the second embodiment;
Figure 14 is a cross section of a valve integrated with a female thread type joint describing the third embodiment;
Figure 15 is a cross section of a valve which is similar to an union joint in its constitution describing the first embodiment;
Figure 16 is a cross section of an former valve equipped with pipes-connecting hole;
Figure 17a is an enlarged cross section showing that the first packing ring and the second packing ring of a former valve with pipes-connecting hole are inserted and assembled in a valve;
Figure 17b is an enlarged cross section showing that the second packing ring transformed from Figure 17a maintain airtightness;
Figure 18 is a perspective view of former first packing ring and second packing ring.
Best Modes for Carrying Out the Invention
The first embodiment is shown in Figure 1 through 3. The first embodiment is an union joint to connect two pipes in series in which connecting parts 110, 120 are formed on both sides of the joint body symmetrically and pipes PI, P2, bushes 130, 140, the second packing rings 150, 160, and the first packing rings 170, 180 are joined in order to the connecting parts 110, 120. Hexagonal head part 102 is formed on circumference in the middle of the outer surface of the joint body 100 and as same sized hexagonal head parts 132, 142 as said hexagonal head part is formed on bushes 130, 140 working as one pair of spanners in combining and separating. As shown in Figure 2, inner constitution of the joint body 100 can be detected and connecting parts 110, 120 on both sides are penetrated so that a fluid can move to either directions.
Said two connecting parts 110, 120 have identical constitution. The first holes 112, 122 located in the center, the second holes 114, 124 which are a little bit larger than the first holes 112, 122, and the third holes 116, 126 are formed three phases from inside to outward in order. The ends of pipes PI, P2 are inserted into the first holes 112, 122 which are formed as same size as the pipe's circumference and on the circumference around the middle of the pipe, a center stopper 104 which controls depth of inserting pipes PI, P2 can be formed. Said second holes 114, 124 where the first packing rings 170, 180 are inserted are formed a little bit smaller than the first packing rings 170, 180.
Said third holes 116, 126 are where the second packing rings 150, 160 and bushes 130, 140. Female threads 117, 127 are placed inside the third holes 116, 126 to be conjoined with male threads 134, 144 of bushes 130, 140.
The first stopper 113, 123 are formed between the first holes 112, 122 and the second holes 114, 124 so that the ends of the first packing ring 170, 180 are stopped and stuck. The second stopper 115, 125 are formed between the second holes 114, 124 and the third holes 116, 126 so that the ends of the second packing rings 150, 160 are stopped and stuck.
The bushes 130, 140 comprise hexagonal head parts 132, 142 and male threads 134, 144 formed on one side of the hexagonal head parts. Penetrating holes 136, 146 where pipes PI, P2 are inserted are formed inside of the hexagonal head parts 132, 142 and male threads 134, 144. Said male threads 134, 144 are equipped with plural slits 135, 145 so that diameter of male threads is flexible. Tapered and inclined parts 137, 147 are formed at the ends of the male threads 134, 144 to adhere to one side of said second packing rings 150, 160. Figure 4 is a enlarged cross section of the second packing rings 150, 160 of the invention. The second packing rings 150, 160 have connecting parts 152, 162 on one side, which contact said first packing rings 170, 180. On outer surface of the connecting parts 152, 162 elevated stopper 154, 164 are formed to stop at the second stoppers 115, 125 at the ends of the third holes 116, 126 to prevent the second packing rings 150, 160 from being inserted too deeply toward inside of the connecting parts 110, 120 of joint body. And on the other sides of the second packing rings tapered parts are formed to contact inclined parts 137, 147 of inside of the edges of the male threads 134, 144 of bushes 130, 140. Moreover, in the second packing rings 150, 160, projections 158, 168 are formed on circumference of inner surface of tapered parts 156, 166 to hold pipes, PI, P2. Of the second packing rings 150, 160, the contact parts 159, 169 with a certain radius of curvature are formed inside so that improves contact condition of outer surface of the pipes PI, P2 when conjoined with the second packing rings.
In addition, slightly inclined slits 151, 161 in one side in direction of length are formed on the second packing rings 150, 160, which enable the diameter to shrink.
Various materials can be used for manufacturing joint body 100, bushes 130, 140, and the second packing rings 150, 160 depending the uses, and the first packing rings 170, 180 can be manufactured with silicone, Teflon or rubber materials, and for piping transporting high temperature fluid thermostable material can be used.
The process combining two pipes in series using an union joint of the first embodiment of the invention is described below.
First, bushes 130, 140 and the second packing rings 150, 160 are put in pipes PI, P2 in order, and the first packing rings 170, 180 are inserted into the edges of the pipes PI, P2.
Then, a union joint body is placed between the pipes PI, P2 and pipes
PI, P2 are inserted into the connecting parts 110, 120 on both sides of the joint body then, the first packing rings 170, 180 on the ends of the pipes PI, P2 are inserted into the first holes 112, 122 placed inside of the each connecting parts 110, 120. At this point, when bushes 130, 140 are rotated holding the joint body
100 not to rotate, male threads 134, 144 of bushes 130, 140 are screwed at connecting parts 110, 120 and inserted inward.
At the same time, the second packing rings 150, 160 inserted before bushes 130, 140 are placed inside of the third holes 116, 126 of the connecting parts 110, 120.
The first packing rings 170, 180 at the first packing rings 112, 122 are under pressure with continuous rotating bushes 130, 140. The packing rings 170, 180 are shrunk in direction of length but their thickness is increased. This effects that a gap between outside of the pipes PI, P2 and the first holes 112, 122 is filled up then, airtight and watertight are kept.
On the contrary that the second packing rings 150, 160 are shrunk, male threads 134, 144 of bushes 130, 140 are inserted along with tapered parts 156, 166 of the second packing rings 150, 160, then, the diameter of male threads is expanded, so they tightly fits female threads 117, 127 formed at the third holes 116, 126.
When bushes 130, 140 are fastened tight enough, thickness of the first packing rings 170, 180 are increased gradually but elevated stoppers
154, 164 formed on one side of the second packing rings 150, 160 are caught by the second stoppers 115, 125 at the connecting parts 110, 120.
Thus, this prevents the first packing rings 170, 180 from excessive transformation and insertion, and the operator would detect the condition easily and can adjust the tightness properly, and does not need to waste energy and efforts.
In case of taking them apart, the same process need to be done in contrary order. At that time, if the first rings 170, 180 are damaged, they can be replaced with new ones, and the second packing rings 150,
160 are separated easily with expanded diameter by self restoration power.
Modes for Carrying Out the Invention
Figure 5 describes the second embodiment of the invention and the Figure 6 describes the third embodiment of the invention. In each these embodiments, a male thread part 206 and a female thread part 208, which are conjoined in one on the side of a joint body 200, can be combined with material other than pipes, for example, faucet of the fluid tank by connecting the joint body 200 directly and a pipe P can be conjoined with the other side of the joint body's connecting part
210.
For identical components in the attached drawings, identical codes are used as far as possible and redundant description is omitted for convenience. The fourth embodiment described in Figure 7 is a elbow joint. Connecting parts 310, 320 as same as shown in the first embodiment are formed on both sides of joint body 300 which is bent at an angle of 45° or 90° and pipes PI, P2, bushes 130, 140, the first packing rings 170, 180, and the second packing rings 150, 160 are inserted in order.
In the fourth embodiment, connecting parts 310, 320 are formed on both sides of elbow. The invention, however, is not restricted to this and a female thread can be formed on the side of the elbow and other materials other than pipes can be conjoined as shown in third embodiment.
The fifth embodiment described in Figure 8 is a cap joint to block the one end of a pipe P. Connecting part 410 as shown in the first embodiment is formed on one side of closed-end joint body 400, and an end of a pipe P is conjoined to it, so that blocks the flowing of fluid completely.
The sixth embodiment described in Figure 9 is a T joint which have three connecting parts 510, 520, 530 to conjoin three same sized pipes
PI, P2, P3 into one joint body 500.
The seventh embodiment described in Figure 10 is a transformation of said first embodiment. This joint have two different sized connecting parts 610, 620 on both sides of the joint body to connect two different sized pipes PI, P2 in series.
Transformed embodiment of the sixth embodiment described in Figure
11 is T joint. Connecting parts 710, 720 are formed on both sides of the joint body 700, and contact part 730 with a female thread 732 is formed in the middle, and materials other than pipes are screwed directly into the contact part 730 as shown in the third embodiment.
Another transformed embodiment of the sixth embodiment described in
Figure 12 is T joint. Identical sized connecting parts 810, 820 are formed on both sides of the joint and the connecting parts 810, 820 make a right angle with a middle connecting part 830 which is formed in different size, so a pipe with a narrower diameter can branch off. Figure 13 and 14 describes a valve, as same as shown in second embodiment and the third embodiment, which is formed with a male thread joint or a female thread joint in one body, and on one end of the valve body 900 a male thread joint 902 or a female thread joint 904 is formed and on the other end the connecting parts 910, 920 are formed to conjoin with a pipe P.
Figure 15 describes a valve which has a similar constitution with a union joint described in the first embodiment. In the embodiment, the connecting parts 910, 920 of which constitution is as identical as shown in the first embodiment are formed on both sides of the valve body 900, and the valve can be placed between two pipes PI, P2.
Industrial Applicability
The present invention provides a piping joint and a valve controlling fluid flow, in which simple joint tools can conjoin pipes without screws or extra flange coupling processes, in piping for heating, water service, hygiene, and industry. With the invention, first, pipe's watertightness is improved, second, connection can be maintained firm, third, tightening level can be detected from the outside so that a proper level can be obtained, and fourth, possible repeated use ease its maintenance.

Claims

What is Claimed is:
1. A Piping joint comprising a joint body having connecting parts on one side, both sides, or three places where the end of a raw pipe is inserted, a bush screwed inside the connecting part in the joint body, the first packing ring inserted at the end of said pipe, the second packing ring inserted at the end of the first packing ring is characterized in that; said connecting part comprises the first hole where a pipe is inserted, the second hole where the first packing ring is inserted, and the third hole equipped with a female thread connecting the second packing ring and bush, having three holes formed three phases outward on the concentric circle; one side of said second packing ring contacts the first packing ring, and around the contact part a stopper between the second hold and the third hole is placed to prevent the second packing ring from inserting too deeply into inside of the connecting part and the other side of the second packing ring is tapered down in a certain angle to contact the slant of bush's edge, and the tapered part is equipped with projections inside to hold pipes firm; a female thread being formed in said bush is equipped with several slits which help a female thread stick a male thread when screwed.
2. A piping joint as claimed in Claim 1 characterized in that a male threaded part or a female threaded part is formed in one on the side of said joint body.
3. A piping body as claimed In Claim 1 or 2 characterized in that said joint body is a elbow joint.
4. A piping joint as claimed in Claim 1 characterized in that an end of said joint body is closed.
5. A piping joint as claimed in Claim 1 characterized in that diameter of connecting parts formed on each sides of said joint body is different.
6. A piping joint as claimed in Claim 1 characterized in that said joint body is a T joint.
7. A piping joint as claimed in Claim 1 characterized in that size of a connecting part formed on the side of a joint body is different with two other connecting parts.
8. A piping joint as claimed in Claim 6 or 7 characterized in that a female threaded part or a male threaded part is formed in one on the side of a joint body.
9. A valve comprising a valve body having a connecting part on one side where the end of a raw pipe is inserted and on the other side a female threaded part or a male threaded part formed in one, a bush screwed inside the connecting part, the first packing ring inserted at the edge of said pipe, the second packing ring inserted at the end of the first packing ring is characterized in that; said connecting part comprises the first hole where the end of the pipe is inserted, the second hole where the first packing ring is inserted, and the third hole formed with a female thread inside connecting the second packing ring and bush, having three holes formed three phases outward on the concentric circle; one side of said second packing ring contacts the first packing ring, and around the contact part a stopper between the second hold and the third hole is placed to prevent the second packing ring from inserting too deeply into inside of the connecting part, and the other side of the second packing ring is tapered down in a certain angle to contact the slant of bush's edge, and the tapered part is equipped with projections inside to hold pipes firm; a female thread is formed in said bush, which is equipped with several slits to help a female thread stick a male thread when screwed.
10. A valve comprising a valve body having connecting parts where the end of a raw pipe is inserted, bush screwed inside of the connecting parts, the first packing ring inserted at the end of said pipe, and the second packing ring inserted at the end of the first packing ring is characterized that; said connecting part comprises the first hole where the end of the pipe is inserted, the second hole where the first packing ring is inserted, and the third hole formed with a female thread inside connecting the second packing ring and bush, having three holes formed three phases outward on the concentric circle; one side of said second packing ring contacts the first packing ring, and around the contact part a stopper between the second hold and the third hole is placed to prevent the second packing ring from inserting too deeply into inside of the connecting part, and the other side of the second packing ring is tapered down in a certain angle to contact the slant of bush's edge, and the tapered part is equipped with projections inside to hold pipes firm; a female thread is formed in said bush, which is equipped with several slits to help a female thread stick a male thread when screwed.
EP97950450A 1997-12-23 1997-12-23 Piping joint and integrated valve with it Withdrawn EP1042631A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR1997/000276 WO1999032821A1 (en) 1997-12-23 1997-12-23 Piping joint and integrated valve with it

Publications (1)

Publication Number Publication Date
EP1042631A1 true EP1042631A1 (en) 2000-10-11

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EP97950450A Withdrawn EP1042631A1 (en) 1997-12-23 1997-12-23 Piping joint and integrated valve with it

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US (1) US6488318B1 (en)
EP (1) EP1042631A1 (en)
KR (1) KR20010040307A (en)
AU (1) AU5344198A (en)
WO (1) WO1999032821A1 (en)

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Also Published As

Publication number Publication date
US6488318B1 (en) 2002-12-03
KR20010040307A (en) 2001-05-15
WO1999032821A1 (en) 1999-07-01
AU5344198A (en) 1999-07-12

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